Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Decoupled estimation of DOA and angular spread for a spatiallydistributed source
IEEE Transactions on Signal Processing
Estimation of directions of arrival of multiple scattered sources
IEEE Transactions on Signal Processing
State space initiation for blind mobile terminal position tracking
EURASIP Journal on Advances in Signal Processing
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The direction estimation of a radiating source is in some cases disturbed by multipath scattering. The received signals along a receiving array are then decorrelated to a certain extent and the resolution is decreased. By applying space-time processing the direct wave may be distinguished from the delayed multipath signal components. This is achieved by estimation of the space-time correlation matrix and deriving a prediction error filter combined with beamforming for the unknown direction. The performance is demonstrated by examples with simulated signals. Further, the estimated direction of the direct wave may be applied for beamforming. Its output may then be used as a reference for blind estimation of the channel response for all multipath components. The proposed procedure may be applied for radar jammer mapping or for the localization of mobile communication stations.